At this time it's a bit too early to judge on performance improvements, because OpenCL implementation isn't quite complete yet. However Krzysztof shared this:

What I can tell now that GPU is much faster for fractal rendering (up to 30 times), but accuracy is worse. I'm going to make more complex implementation with all shaders and effects. Then I will compare.

The new version has two more features: a new General Fold Box formula and animation effect for water (one of the primitive objects that v1.08 got).